90864455198 has 32 divisors (see below), whose sum is σ = 154279130112. Its totient is φ = 39762547200.

The previous prime is 90864455197. The next prime is 90864455203. The reversal of 90864455198 is 89155446809.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90864455197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213536 + ... + 476787.

It is an arithmetic number, because the mean of its divisors is an integer number (4821222816).

Almost surely, 2^90864455198 is an apocalyptic number.

90864455198 is a deficient number, since it is larger than the sum of its proper divisors (63414674914).

90864455198 is a wasteful number, since it uses less digits than its factorization.

90864455198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690560.

The product of its (nonzero) digits is 12441600, while the sum is 59.

The spelling of 90864455198 in words is "ninety billion, eight hundred sixty-four million, four hundred fifty-five thousand, one hundred ninety-eight".